<template>
  <el-image
      :src="`${realSrc}`"
      :index="`${realSrcIndex}`"
      fit="cover"
      :style="`width:${realWidth};height:${realHeight};`"
      :preview-src-list="realSrcList"
      preview-teleported
  >
    <template #error>
      <div class="image-slot">
        <el-icon>
          <picture-filled/>
        </el-icon>
      </div>
    </template>
  </el-image>
</template>

<script setup>
import {isExternal} from "@/utils/validate";

const props = defineProps({
  src: {
    type: String,
    default: ""
  },
  width: {
    type: [Number, String],
    default: ""
  },
  height: {
    type: [Number, String],
    default: ""
  },
  index: {
    type: [Number, String],
    default: 0
  }
});

const realSrc = computed(() => {
  if (!props.src) {
    return;
  }

  let real_src = props.src.split(";")[props.index];
  if (isExternal(real_src)) {
    return real_src;
  }
  return import.meta.env.VITE_APP_BASE_API + real_src;
});

const realSrcList = computed(() => {
  if (!props.src) {
    return;
  }
  let srcList = [];
  let real_src_list = props.src.split(";");
  let real_src_nowIndex = '';
  // 按照数组重新拍下图片顺序
  if (props.index > 0) {
    real_src_nowIndex = real_src_list[props.index];
    srcList.push(real_src_nowIndex);
  }
  real_src_list.filter(v => v != real_src_nowIndex).forEach(item => {
    if (isExternal(item)) {
      return srcList.push(item);
    }
    return srcList.push(import.meta.env.VITE_APP_BASE_API + item);
  });

  return srcList;
});

const realSrcIndex = computed(() => {
  if (!props.index) {
    return 0;
  }

  return typeof props.index == "number" ? props.index : 0
});

const realWidth = computed(() =>
    typeof props.width == "string" ? props.width : `${props.width}px`
);

const realHeight = computed(() =>
    typeof props.height == "string" ? props.height : `${props.height}px`
);
</script>

<style lang="scss" scoped>

.el-image {
  border-radius: 5px;
  background-color: #ebeef5;
  box-shadow: 0 0 5px 1px #ccc;

  :deep(.el-image__inner) {
    transition: all 0.3s;
    cursor: pointer;

    &:hover {
      transform: scale(1.2);
    }
  }

  :deep(.image-slot) {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
    color: #909399;
    font-size: 30px;
  }
}
</style>
